\documentclass[tikz,border=0.1cm]{standalone}

\usepackage{tikz}
\usepackage{pgfplots}
\usepackage{amsmath}

\pgfplotsset{compat=newest}

\begin{document}

\newcommand{\power}{10}

\begin{tikzpicture}
\fontfamily{phv}
\scriptsize
\begin{axis}[
  height=5.5cm,
  width=5cm,
  axis x line=center,
  axis y line=center,
  xtick={-300,-150,100,300},
  xticklabels={30.0,15.0,100,300},
  ytick={20,60,100},
  yticklabels={},
  xgrid,
  xlabel style={below left},
  ylabel style={below right},
  xmin=-450,
  xmax=400,
  ymin=-5,
  ymax=130]
  
\node[] at (axis cs: -150,125) {MAPE};
\node[] at (axis cs: 150,125) {RMSE};

%% RMSE
\draw[draw=gray!60, fill=red!20] (6,20-14) rectangle (85.93,20-7-0.7);
\draw[draw=gray!60, fill=red!20] (6,20-14+40) rectangle (100.81,20-7+40-0.7);
\draw[draw=gray!60, fill=red!20] (6,20-14+80) rectangle (115.67,20-7+80-0.7);

\draw[draw=gray!60, fill=green!20] (6,20-7) rectangle (195.53,20-0.7);
\draw[draw=gray!60, fill=green!20] (6,20-7+40) rectangle (301.79,20+40-0.7);
\draw[draw=gray!60, fill=green!20] (6,20-7+80) rectangle (385.27,20+80-0.7);

\draw[draw=gray!60, fill=blue!20] (6,20) rectangle (102.64,20+7-0.7);
\draw[draw=gray!60, fill=blue!20] (6,20+40) rectangle (164.89,20+7+40-0.7);
\draw[draw=gray!60, fill=blue!20] (6,20+80) rectangle (210.56,20+7+80-0.7);

\draw[draw=gray!60, fill=yellow!20] (6,20+7) rectangle (93.18,20+14-0.7);
\draw[draw=gray!60, fill=yellow!20] (6,20+7+40) rectangle (131.97,20+14+40-0.7);
\draw[draw=gray!60, fill=yellow!20] (6,20+7+80) rectangle (171.63,20+14+80-0.7);


%% MAPE
\draw[draw=gray!60, fill=red!20] (-6,20-14) rectangle (-153.5,20-7-0.7);
\draw[draw=gray!60, fill=red!20] (-6,20-14+40) rectangle (-179.1,20-7+40-0.7);
\draw[draw=gray!60, fill=red!20] (-6,20-14+80) rectangle (-203.9,20-7+80-0.7);

\draw[draw=gray!60, fill=green!20] (-6,20-7) rectangle (-192.8,20-0.7);
\draw[draw=gray!60, fill=green!20] (-6,20-7+40) rectangle (-241.3,20+40-0.7);
\draw[draw=gray!60, fill=green!20] (-6,20-7+80) rectangle (-293.2,20+80-0.7);

\draw[draw=gray!60, fill=blue!20] (-6,20) rectangle (-176.8,20+7-0.7);
\draw[draw=gray!60, fill=blue!20] (-6,20+40) rectangle (-279.8,20+7+40-0.7);
\draw[draw=gray!60, fill=blue!20] (-6,20+80) rectangle (-334.0,20+7+80-0.7);

\draw[draw=gray!60, fill=yellow!20] (-6,20+7) rectangle (-187.2,20+14-0.7);
\draw[draw=gray!60, fill=yellow!20] (-6,20+7+40) rectangle (-240.5,20+14+40-0.7);
\draw[draw=gray!60, fill=yellow!20] (-6,20+7+80) rectangle (-380.0,20+14+80-0.7);

\addplot[mark=None, very thin, dashed] plot coordinates { (-150,0) (-150,115) };
\addplot[mark=None, very thin, dashed] plot coordinates { (100,0) (100,115) };


\end{axis}
\end{tikzpicture}

\end{document}